Lupinus 'Blacksmith'
lupin 'Blacksmith'
A vigorous, upright, clump-forming herbaceous perennial with palm-shaped mid-green leaves. Dense spikes of purple and white flowers appear late spring, flowering throughout the summer
Buy this plant
Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Well–drainedpH
Acid, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Purple White | Green | ||
|---|---|---|---|---|
| Summer | Purple White | Green | ||
| Autumn | ||||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or East–facing or West–facing
Exposure
Sheltered Hardiness
H5Botanical details
- Family
- Fabaceae
- Native to GB / Ireland
- No
- Foliage
- Deciduous
- Habit
- Clump forming, Columnar upright
- Potentially harmful
- Harmful if eaten. Wear gloves and other protective equipment when handling. TOXIC to pets if eaten (dogs, cats, rabbits, tortoises) - see the HTA guide to potentially harmful plants for further information and useful contact numbers
- Genus
Lupinus can be annuals, perennials or shrubs, with palmate leaves and showy terminal racemes of pea-like flowers
- Name status
Accepted
How to grow
Cultivation
Grow in moderately fertile, humus-rich, light, moist but well-drained soil in full sun or light, dappled shade. May require support (see staking perennials)
Propagation
Propagate by basal stem cuttings
Suggested planting locations and garden types
- City and courtyard gardens
- Cottage and informal garden
- Coastal
- Patio and container plants
- Cut flowers
- Flower borders and beds
Pruning
Deadhead to encourage a second flush of flowers
Pests
May be susceptible to slugs and lupin aphid
Diseases
May be susceptible to powdery mildews, rots, a leaf spot and a virus
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.